code: def _mean_prediction_ci(
      y_obs: np.ndarray, y_pred: np.ndarray, se_pred: np.ndarray
  ) -> float:
      # Pyre does not allow float * np.ndarray.
      return float(np.mean(1.96 * 2 * se_pred / np.abs(y_obs)))
  
file_path: Ax/ax/utils/stats/model_fit_stats.py
imports: from typing import Dict, Mapping, Optional, Protocol
  import numpy
  from scipy.stats import fisher_exact, norm, pearsonr, spearmanr
label_desc: Use image node_id 5 for calling a global function with example usage: _mean_prediction_ci(y_obs, y_pred, se_pred) and returns: float